package com.hj.javaweb.R;


import com.fasterxml.jackson.annotation.JsonProperty;
import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.NoArgsConstructor;
import lombok.Setter;
import lombok.ToString;
import org.springframework.lang.Nullable;
import org.springframework.util.ObjectUtils;

import java.util.Optional;

/**
 * @author yancq
 * @since 2019/4/19 14:55
 */

@SuppressWarnings("AlibabaClassNamingShouldBeCamel")
@Setter
@ToString
@ApiModel(description = "返回信息", value = "R")
@NoArgsConstructor
public class R<T> {


    private static final long serialVersionUID = 1L;

    @ApiModelProperty(value = "状态码", required = true)
    private int code;
    @ApiModelProperty(value = "是否成功", required = true)
    private boolean success;
    @ApiModelProperty(value = "承载数据")
    private T data;
    @ApiModelProperty(value = "返回消息", required = true)
    private String msg;

    private R(IResultCode resultCode) {
        this(resultCode.getCode(), null, resultCode.getMessage());
    }

    private R(IResultCode resultCode, T data) {
        this(resultCode.getCode(), data,resultCode.getMessage());
    }

    private R(IResultCode resultCode, String meg) {
        this(resultCode.getCode(), null,meg);
    }

    private R(int code, T data, String msg) {
        this.code = code;
        this.data = data;
        this.msg = msg;
        this.success = ResultCode.SUCCESS.code == code;
    }


    /**
     * 判断返回是否为成功
     *
     * @param result Result
     * @return 是否成功
     */
    public static boolean isSuccess(@Nullable R<?> result) {
        return Optional.ofNullable(result)
                .map(x -> ObjectUtils.nullSafeEquals(ResultCode.SUCCESS.code, x.code))
                .orElse(Boolean.FALSE);
    }

    /**
     * 判断返回是否为成功
     *
     * @param result Result
     * @return 是否成功
     */
    public static boolean isNotSuccess(@Nullable R<?> result) {
        return !R.isSuccess(result);
    }

    /**
     * 返回R
     *
     * @param data 数据
     * @param <T>  T 泛型标记
     * @return R
     */
    public static <T> R<T> ok(T data) {
        return new R<>(ResultCode.SUCCESS, data);
    }

    /**
     * 返回R
     *
     * @param data 数据
     * @param msg  消息
     * @param <T>  T 泛型标记
     * @return R
     */
    public static <T> R<T> ok(T data, String msg) {
        return ok(ResultCode.SUCCESS.code, data, msg);
    }

    /**
     * 返回R
     *
     * @param code 状态码
     * @param data 数据
     * @param msg  消息
     * @param <T>  T 泛型标记
     * @return R
     */
    public static <T> R<T> ok(int code, T data, String msg) {
        return new R<>(code, data,  msg);
    }


    public static <T> R<T> ok() {
        return new R<>(ResultCode.SUCCESS);
    }



    /**
     * 返回R
     *
     * @param msg 消息
     * @param <T> T 泛型标记
     * @return R
     */
    public static <T> R<T> fail(String msg) {
        return new R<>(ResultCode.FAILURE, msg);
    }


    /**
     * 返回R
     *
     * @param <T> T 泛型标记
     * @return R
     */
    public static <T> R<T> fail(T data) {
        return new R<>(ResultCode.FAILURE, data);
    }


    /**
     * 返回R
     *
     * @param code 状态码
     * @param msg  消息
     * @param <T>  T 泛型标记
     * @return R
     */
    public static <T> R<T> fail(int code, String msg) {
        return new R<>(code, null, msg);
    }

    /**
     * 返回R
     *
     * @param resultCode 业务代码
     * @param <T>        T 泛型标记
     * @return R
     */
    public static <T> R<T> fail(IResultCode resultCode) {
        return new R<>(resultCode);
    }

    /**
     * 返回R
     *
     * @param <T>        T 泛型标记
     * @return R
     */
    public static <T> R<T> fail() {
        return new R<>(ResultCode.FAILURE);
    }

    /**
     * 返回R
     *
     * @param flag 成功状态
     * @return R
     */
    public static <T> R<T> status(boolean flag) {
        return flag ? ok() : fail();
    }

    /**
     * 操作确认
     * @return R
     * @param <T> 形参
     */
    public static <T> R<T> confirm() {
        return new R<>(ResultCode.ACTION_CONFIRM);
    }

    /**
     * 兼容cue
     */
    @JsonProperty("Code")
    public int getCode() {
        return ResultCode.SUCCESS.code == code ? 0 : code;
    }

    @JsonProperty("Success")
    public boolean getSuccess(){
        return success;
    }

    /**
     * 兼容cue
     */
    @JsonProperty("Message")
    public String getMsg() {
        return msg;
    }

    /**
     * 兼容cue
     */
    @JsonProperty("Response")
    public T getData() {
        return data;
    }

}
